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Letters Patent No. 75,993, dated March 24, 1868.

IMPROVEMENT 1N FRUIT-JARS. i

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To ALL WHoM rr 'MAY coNcERN:

Be it known that I, CHARLES S. SIDDONS, of the city of-Rochester, Stateof New York, have invented o new and useful Fruit-Jar; and I do herebydeclare that the following thereof, reference being had to theaccompanying drawing, making is a vertical section ofmy invention.

This invention consists in providing fruit-jars with a cover and neel;that will exclud pheric pressure on thc'coven-'after it is lled'withfruit and sirup.

To enableothers to make and use my invention, I will describe itsconstruction and operation.I

I make my jar with a. neck, having projection on the inside for thecoverland packing to rest' on, shown ut O O. I form my cover by taking apiece of tinotl suilcient size, and with die, or other suitable machine,make it concave, so that a rim, B, is formed around the outside, atright angles to the bottom, o'r nearly so, as shown at J J, at thesame'o'peration turning a. Harige, P P, on this rim, anti thusfornied,the diameter of the ange will be alittle less than the diameter' of themouth of the jar, so that it will enter easily, but larger than thediameter of the inside projection ofthe neck at O O,"s othat the coverwill have a. substantial bearing on the projection. I put asuitablepacking between the cover and projection O O to make itair-tight.v To the top of the cover, I attach a ring, K, for the'purposeof drawin.,r it' from the jar. i

I rlhe mode of using this jar and cover is to. fill it with fruit andsirup, up nearly to the projection O O, while hot, and then spring thepacking-ring over the vertical portion of the cover, and place the coverwith the packing solapplied, within the noch, and press it down to tbeprojection .O O.

The operation of this cover is such that, as the fruit cools, avacuum isformed to a certain extent in thc jar, and it is` pressed down by theoutside atmosphere. It will be seen vthat thetpacking is conned'on twosides bythe rim B and the flange P P, and on the other two sides bytheprojection OA O and the neck of' the jar, and thus a perfect joint iseffected by the atmospheric pressure.

. The great desideratum gained with this cover is *the clica can bemade, so that it may be stampedout by one -blow and material. y

What I- claim as my invention, und desire to secure by Letters'Patent,is-

The fruit-jar cover, composed of a single sheetfmetal plate, P, and usedin combination with the ordinary. packing-ring as and for the purposesset forth.

is a. full, clear, and exact description e the air by the atmosp endeicien't manner of producing it. A die having a vertical rin, Bv, andprojecting flange, LA, and jar having an internal shoulderor'projection,

GHAS. S. SIDDONS.

Witnesses:

WM. S. LouGHBoRoUGH, H. LORENZO Gien.

part of this specification, in which the-figure" ,and out of one pieceof metal, thereby saving labor

